javascript function not getting value of textarea

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So, I have this jquery function.

<script type="text/javascript">
      $(document).ready(function () {
          $('#answ').hide();

          $("#btnsubmit").click(function () {
              var tbans = $('<%= txtMain.ClientID %>').val();
              alert(tbans);

              $('#answ').toggle();
              return false;
          });
      });
 </script>

<textarea id="txtMain"  runat="server" rows="20" cols="150" ></textarea>

<input type="submit" id="btnsubmit"  />

Now, when I click on submit button, instead of showing the text written in textarea it shows alert that says,"undefined". Toggle function works though.

What I am missing?

P.s I am using tinymce texteditor plugin with my textarea.

UPDATE 1:
I tried using asp button like this.

<asp:Button ID="btnsubmit" runat="server" Text="Submit" Font-Bold="True" 
           CssClass="style10" BackColor="Gainsboro" Font-Size="Medium" 
            ToolTip="Submit Answer." UseSubmitBehavior="false" /><br />

then it shows the value of textarea in alert on click of Submit button and toggle works. But then page refreshes and toggle disappears. Also, if I remove UseSubmitBehavior="false" from button then page doesnt refresh but again, it doesnt show me the value of textarea.

UPDATE 2: I am using tinyMce texteditor with my textarea. tinymce is a well known texteditor. I checked removing tinymce and then code worked. But thing is, the code even worked with tinymce when I took asp.net button with UseSubmitBehavior="false", just it refreshed the page after clicking submit button.

Posted 9-Jan-14 21:48pm

JL_Coder

Updated 9-Jan-14 23:14pm

v3

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5 solutions

Solution 1

you have missed "#" in the selector
~~var tbans = $('<%= txtMain.ClientID %>').val();~~
try this..

JavaScript

var tbans = $('#<%= txtMain.ClientID %>').val();

Posted 9-Jan-14 22:05pm

Karthik_Mahalingam

Comments

JL_Coder 10-Jan-14 4:28am

Sorry. I tried writing #. But then "undefined" error is gone, but it is not showing the text written in textarea, it just shows a blank alert.

Karthik_Mahalingam 10-Jan-14 4:36am

It should work,
post your latest code....

JL_Coder 10-Jan-14 4:41am

please check update in my question.

Karthik_Mahalingam 10-Jan-14 4:46am

ya checked, that also working fine..

JL_Coder 10-Jan-14 5:15am

please check update.

Karthik_Mahalingam 10-Jan-14 6:00am

ok run the code, in the browser see the source code, and try to find the text editor, and see the ID,, use that id as selector..

Solution 2

hi JL_Coder,

try this

XML

<script type="text/javascript" src="//code.jquery.com/jquery-1.10.2.js"></script>
   <script type="text/javascript">
       $(document).ready(function () {
           $('#answ').hide();
           $("#btnsubmit").click(function () {
               var tbans = $('#txtMain').val();
               alert(tbans);
               $('#answ').toggle();
               return false;
           });
       });
   </script>

XML

<textarea id="txtMain" runat="server" rows="20" cols="150"></textarea>
   <input type="submit" id="btnsubmit" />
   <label for="male" id="answ">
   </label>

Posted 9-Jan-14 22:05pm

Bojjaiah

Comments

JL_Coder 10-Jan-14 4:31am

it shows blank alert after i tried writing ('#txtMain').

Bojjaiah 10-Jan-14 8:36am

it's working for me,

can u refer this <script type="text/javascript" src="//code.jquery.com/jquery-1.10.2.js"></script>

Solution 3

Use

JavaScript

var tbans = $('#<%= txtMain.ClientID %>').val();

instead of

JavaScript

var tbans = $('<%= txtMain.ClientID %>').val();

# is missed.

Posted 9-Jan-14 22:06pm

Deviprasad Das

Comments

JL_Coder 10-Jan-14 4:32am

it shows blank alert after i tried writing in your way.

Solution 4

You have to replace your next code line (that has error!):

var tbans = $('<%= txtMain.ClientID %>').val();

with the next one one:

var tbans = $('#txtMain').val();

Posted 9-Jan-14 22:06pm

Raul Iloc

Comments

JL_Coder 10-Jan-14 4:32am

it shows blank alert after i tried writing in your way.

Raul Iloc 10-Jan-14 4:42am

Try then to replace function val() with text().

var tbans = $('#txtMain').text();

JL_Coder 10-Jan-14 5:15am

please check update.

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JL_Coder · Accepted Answer · 2014-01-10T21:23:00

Solution 5

As I was using Tinmce editor, I had use below code to get the content of the textarea. It worked for me.

var tbans = window.parent.tinymce.get('txtMain').getContent();

Posted 10-Jan-14 21:23pm

JL_Coder